EP0425936B1 - Vorrichtung zum lagegenauen Schnellklemmen und Spannen von Druckplatten - Google Patents

Vorrichtung zum lagegenauen Schnellklemmen und Spannen von Druckplatten Download PDF

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Publication number
EP0425936B1
EP0425936B1 EP90120084A EP90120084A EP0425936B1 EP 0425936 B1 EP0425936 B1 EP 0425936B1 EP 90120084 A EP90120084 A EP 90120084A EP 90120084 A EP90120084 A EP 90120084A EP 0425936 B1 EP0425936 B1 EP 0425936B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
cylinder
clamping
lever
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90120084A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0425936A3 (en
EP0425936A2 (de
Inventor
Manfred Herold
Herbert Rebel
Roland Höll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT90120084T priority Critical patent/ATE99601T1/de
Publication of EP0425936A2 publication Critical patent/EP0425936A2/de
Publication of EP0425936A3 publication Critical patent/EP0425936A3/de
Application granted granted Critical
Publication of EP0425936B1 publication Critical patent/EP0425936B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

  • the invention relates to a device for precise clamping and clamping of printing plates on the plate cylinder according to the preamble of the first claim.
  • a device according to the preamble of claim 1 is known from DE-PS 3 516 682 and enables, in a manner known per se, the clamping of the printing plate at the beginning and end of printing by rotating the eccentric shafts associated with the corresponding tensioning rails by means of a hand-operated tool.
  • the subsequent tensioning of the pressure plate is carried out manually using a tool in which the tensioning rail at the end of the print is displaced almost in the circumferential direction by a central actuating device and a pressure bar.
  • the disadvantage here is that several manual manipulations on the cylinder channel are necessary and automatic re-tensioning is not guaranteed while the machine is running.
  • DE-OS 3 843 433 describes a device for rapid clamping of printing plates, the eccentric shafts causing the clamping and clamping on the cylinder side wall each being provided with double roller levers and for clamping, unclamping, clamping, relaxing via an actuator fixed to the frame after a corresponding angular positioning of the Plate cylinders are rotatable.
  • EP-A2 0 260 492 also describes a technically similar route, with the eccentric shafts on the cylinder side wall instead carry double simple lever arms and can be rotated by pulling or pushing through a frame-side actuator
  • DE-OS 3 843 395 shows a further device for precise rapid clamping.
  • the clamping and clamping device is assigned at least one common actuating device arranged on the machine frame and corresponding to the angular position of the plate cylinder at the time of clamping and clamping. Clamping and tensioning takes place via axially displaceable pull wedge gears, which can be moved by the actuating devices arranged on both sides of the cylinder side walls.
  • clamping is not possible while the machine is running.
  • Another disadvantage is that the forces for clamping, unclamping, tensioning and relaxing always act axially and must therefore be absorbed by the bearings of the plate cylinder.
  • the object of the invention is to expand the input-specified device so that a clamping and tensioning of the printing plate can be carried out precisely with a minimum of handling effort, regulating the tension of printing plates and their automatic re-tensioning is made possible uniformly over the entire width, in particular in the case of large-format printing plates and also the design disadvantages mentioned in the prior art can be avoided.
  • the plate cylinder 1 is supported on both sides by frame walls 2 of the printing press in bearings, not shown. In its cylinder channel it has 3 means for clamping and tensioning printing plates. 1, 3 and 5, these means are designed as a front and rear tensioning rail 4, 5 assigned to the beginning and the end of printing, each consisting of an upper clamping device 4.1, 5.1, a lower clamping device 4.2, 5.2 and actuatable by eccentric shafts 4.3, 5.3. These tensioning rails 4, 5 can be split or undivided tensioning rails.
  • the front clamping rail 4 is supported Tensioning screws 4.4 directly on the wall of cylinder channel 3.
  • the pressure plate is fixed in the front tensioning rail 4 in a known manner in a zero position, for example by means of dowel bolts.
  • the rear tensioning rail 5 is supported by tensioning screws 5.4 on a pressure bar 7 which runs and is displaceable parallel to the rear channel wall in a recess 6 machined there.
  • the pressure bar 7 has two recesses 8 one above the other with an inclined plane, which slide on wedge surfaces on counterparts 9, so that a movement of the pressure bar 7 parallel to the channel wall causes the pressure plate to be tensioned by a tensioning rail 5 displacing from the rear channel wall.
  • the tensioning device described which is to be counted in the prior art, thus represents a series connection consisting of a pre-tensioning device (pressure bar 7, recesses 8, counterparts 9) and the tensioning screws 5.4 for the final, adjusting tensioning.
  • the eccentric shafts 4.3, 5.3, as shown in FIGS. 1 to 3, have coupling sleeves 12 on both cylinder side walls 10 in openings 11 there, which advantageously terminate flat with the cylinder side walls 10.
  • the openings 11 in the cylinder side walls 10 are dimensioned such that maximum adjustability of the clamping rails 4, 5, in particular by the clamping screws 4.4, 5.4, is ensured (FIGS. 2 and 3).
  • the eccentric shafts 4.3, 5.3 are connected to the coupling sleeves 12 by way of compensating couplings 13, in particular in the Oldham design.
  • clamping tools 14 are movably inserted in the two frame walls, which, if appropriate Angular position of the plate cylinder 1 can be engaged by an axial movement into the coupling sleeves 12 of the pressure start or pressure end eccentric shaft 4.3, 5.3.
  • the end of the clamping tool 14 which engages in the coupling sleeve 12 is designed in a form-fitting manner with respect to the inner profile of the coupling sleeve 12.
  • the coupling sleeve 12 has an internal hexagon profile and the end of the clamping tool 14 an external hexagonal profile. The latter can also rejuvenate. (Fig. 2).
  • the rear part of the clamping tool 14 pointing away from the plate cylinder 1 is a piston rod 15 with a piston disk 16, which in turn is guided in a cylinder bore 16 'of the frame wall 2 (FIG. 2).
  • the cylinder bore 16 ' delimits a flange 17 attached to the frame wall 2
  • the cylinder bore 16' is delimited by a bearing part 18 attached to the frame wall 2.
  • Flange 17 guides the front part (shaft) of the clamping tool 14.
  • Bearing part 18 guides the end of the piston rod 15 in a bore.
  • the part of the clamping tool 14 which is in the frame wall 2 thus forms with the piston rod 15, piston disk 16, flange 17, bearing part 18 a double acting, ie Working cylinder that can be moved in two directions by applying pressure medium.
  • the pressure medium is fed into the two chambers of the working cylinder via bores 19 and 19 '.
  • the pressure medium is advantageously compressed air.
  • Flange 17 and bearing part 18 have corresponding seals with respect to frame wall 2 and clamping tool 14.
  • This bore and the shaft of the clamping tool 14 are in such a positive connection that the axial displaceability of the clamping tool 14 is not impaired.
  • the bore and shaft have a multi-groove profile.
  • Flange 17 rotatably guides lever 20, the free end of lever 20 is led out through a recess 17 '(FIG. 2b).
  • both compressed air cylinders 23 are installed in the machine in a predominantly vertical orientation, since most of the space is available in this way.
  • the pressure plate can be clamped or unclamped at the pressure start and pressure end by appropriate pressurization of compressed air with clamping tools 14 engaged on both sides in the coupling sleeves 14 of the pressure start, pressure end eccentric shafts 4.3, 5.3. As already mentioned, the clamping tools 14 are engaged or disengaged after the angular positioning of the plate cylinder 1.
  • a motor 25 is arranged between the front and rear clamping rails 4, 5, which drives an adjusting spindle 27 running parallel to the axis of the plate cylinder 1 via a joint 26.
  • a spindle nut 28 is seated on the adjusting spindle 27 and is firmly connected to the pressure bar 7 via a bridge 29.
  • the adjusting spindle 27 is guided as a shaft by means of an axial thrust bearing 30 through a support wall 31 and is supported at its end with a spherical end face by means of a pressure piece 32 on a further support wall 31 (FIGS. 3 and 4).
  • the spindle nut 28, that is also the pressure bar 7 is displaced parallel to the rear wall of the cylinder channel 3 via the adjusting spindle 27, which is supported on both sides. Since the adjusting spindle 27 moves parallel to the pressure bar 7, the thrust bearing 30 is embedded in a corresponding groove 31 'in the support wall 31 (FIG. 5).
  • the motor 25 is pivotably mounted at its rear end by means of a joint 25 'parallel to the bottom of the cylinder channel 3 (FIGS. 3 and 4).
  • the motor 25 is advantageously a compressed air motor, in particular a vane motor.
  • a tensioning lever 33 is assigned along the (contact surface of the pressure bar 7 to each tensioning screw 5.4 (FIGS. 3 and 6).
  • each with two tensioning screws 5.4 in total four tensioning levers 33 which are advantageously arranged in mirror image to the center of the plate cylinder 1 (FIG. 7).
  • the tensioning levers 33 are supported on the pressure bar 7 via a molded-on cam 34 with a force-intensifying lever transmission.
  • One end of each of the tension levers 33 is connected to the rear tensioning rail 5 by means of a swivel 35, i.e. the lower clamping device 5.2 connected.
  • the other free end of the tensioning lever 33 is supported on a stop pin 37 under the action of a spring 36 which is supported in a cylinder-fixed manner. This lies on the connecting line of the rotary joints 35 in the rear tensioning rail 5.
  • a gap a therefore arises between the pressure bar 7 and under the clamping device 5.2 (FIGS. 6 and 7).
  • a register correction in the circumferential direction is then carried out in a known manner via the tensioning screws 4.4, 5.4, in the axial direction by means of the adjusting screws indicated in FIG. 7, in particular in the middle of the plate cylinder 1.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP90120084A 1989-11-02 1990-10-19 Vorrichtung zum lagegenauen Schnellklemmen und Spannen von Druckplatten Expired - Lifetime EP0425936B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90120084T ATE99601T1 (de) 1989-11-02 1990-10-19 Vorrichtung zum lagegenauen schnellklemmen und spannen von druckplatten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936458 1989-11-02
DE3936458A DE3936458C1 (zh) 1989-11-02 1989-11-02

Publications (3)

Publication Number Publication Date
EP0425936A2 EP0425936A2 (de) 1991-05-08
EP0425936A3 EP0425936A3 (en) 1991-08-28
EP0425936B1 true EP0425936B1 (de) 1994-01-05

Family

ID=6392712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120084A Expired - Lifetime EP0425936B1 (de) 1989-11-02 1990-10-19 Vorrichtung zum lagegenauen Schnellklemmen und Spannen von Druckplatten

Country Status (5)

Country Link
US (1) US5076166A (zh)
EP (1) EP0425936B1 (zh)
JP (1) JPH0745242B2 (zh)
AT (1) ATE99601T1 (zh)
DE (2) DE3936458C1 (zh)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3936459C1 (zh) * 1989-11-02 1991-04-18 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4034494C1 (zh) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE4111636C1 (zh) * 1991-04-10 1992-07-30 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4112666C2 (de) * 1991-04-18 1994-07-28 Heidelberger Druckmasch Ag Vorrichtung zur Fernbedienung von Klemmeinrichtungen an Zylindern in Rotationsdruckmaschinen
US5188031A (en) * 1991-06-27 1993-02-23 Rockwell International Corporation Printing press blanket cylinder assembly, subassemblies and method of using same
DE4140413C2 (de) * 1991-12-07 1995-03-16 Roland Man Druckmasch Vorrichtung zum Wechseln von Druckplatten bei Offsetdruckmaschinen
DE4214206C2 (de) * 1992-04-30 1995-06-29 Roland Man Druckmasch Vorrichtung zum Betätigen einer Klemmschiene gegenüber der Spannschiene des Plattenzylinders einer Rotationsdruckmaschine, insbesondere Bogenoffsetdruckmaschine
DE4214211C1 (en) * 1992-04-30 1993-05-27 Janko 6052 Muehlheim De Despot Rotating pressure coupling - has rotor and housing having inlets leading to chamber sealed by rings which are lubricated, rotor moves axially by groove and cam
DE4219870C2 (de) * 1992-06-17 2002-07-18 Heidelberger Druckmasch Ag Verfahren zum automatischen Druckplattenwechsel
DE4238121C2 (de) * 1992-11-12 1996-01-11 Roland Man Druckmasch Vorrichtung zum Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
US5335046A (en) * 1993-02-22 1994-08-02 Intergraph Corporation Clamping mechanism for use on a rotatable plotter drum
DE4314436C2 (de) * 1993-05-03 1996-08-22 Roland Man Druckmasch Spannschiene für den Plattenzylinder einer Druckmaschine, insbesondere Bogenoffsetdruckmaschine
US5383401A (en) * 1994-02-22 1995-01-24 Heidelberg Druckmaschinen Ag Actuating device for clamping arrangement for printing plates in rotary printing presses
DE19961866A1 (de) * 1999-12-22 2001-06-28 Roland Man Druckmasch Vorrichtung zur Zufuhr eines Druckmediums zu einem eine Druckform oder ein Gummituch tragenden Zylinder
CZ297962B6 (cs) * 2003-06-19 2007-05-09 Adast A.S. Zarízení pro poloautomatické upínání tiskových forem
US7343843B2 (en) * 2003-07-31 2008-03-18 Blast Gard International Explosive effect mitigated containers and enclosing devices
US8316752B2 (en) * 2003-07-31 2012-11-27 Blastgard Technologies, Inc. Acoustic shock wave attenuating assembly
CN103568055A (zh) * 2012-08-03 2014-02-12 苏州工业园区新明亚电子科技有限公司 自动翻转装置
CN106965551B (zh) * 2017-04-24 2022-06-17 浙江晶蓝印刷机械有限公司 Ps版印刷机版滚筒
CN107081692B (zh) * 2017-05-14 2018-11-13 费晓杰 一种可用于不同厚度钢板的夹紧装置
CN112895683A (zh) * 2020-12-28 2021-06-04 安徽庆丰余防伪科技有限公司 一种用于防伪标签的压合装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
DE2604895C3 (de) * 1976-02-07 1978-11-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zum Umstellen der Greiferbewegung bei einer Wendetrommel für Schön- und Widerdruckmaschinen
JPS5919155A (ja) * 1982-07-23 1984-01-31 Komori Printing Mach Co Ltd 反転機構付枚葉輪転印刷機の圧胴装置
DE3516682A1 (de) * 1985-05-09 1986-11-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum parallelen spannen von druckplatten auf dem plattenzylinder von druckmaschinen
DE3606351A1 (de) * 1986-02-27 1987-09-03 Heidelberger Druckmasch Ag Vorrichtung zum aufspannen von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen
DE3626243A1 (de) * 1986-08-02 1988-02-04 Koenig & Bauer Ag Druckplattenbefestigungs- und spannvorrichtung
JPH0620609Y2 (ja) * 1986-09-17 1994-06-01 三菱重工業株式会社 枚葉印刷機の自動版締め装置
DE3702032A1 (de) * 1987-01-24 1988-08-04 Basf Ag Vorrichtung zum spannen von druckplatten
DE3731642A1 (de) * 1987-09-19 1989-03-30 Koenig & Bauer Ag Plattenschraenkvorrichtung
DD269586B3 (de) * 1987-12-30 1993-02-04 Kba Planeta Ag Einrichtung zum lagegenauen schnellaufspannen von flexiblen druckplatten
DD269585A1 (de) * 1987-12-30 1989-07-05 Polygraph Leipzig Einrichtung zum lagegenauen schnellaufspannen von flexiblen druckplatten
DD269587B5 (de) * 1987-12-30 1993-10-14 Kba Planeta Ag Einrichtung zum schnellaufspannen von flexiblen druckplatten

Also Published As

Publication number Publication date
JPH03161336A (ja) 1991-07-11
DE59004123D1 (de) 1994-02-17
US5076166A (en) 1991-12-31
ATE99601T1 (de) 1994-01-15
DE3936458C1 (zh) 1991-04-11
EP0425936A3 (en) 1991-08-28
EP0425936A2 (de) 1991-05-08
JPH0745242B2 (ja) 1995-05-17

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